D
dontknowitall
Just to put a spanner in the works I don't think you have to be qualified to install these "machines", except for certain parts of it, eg electrics. The oil world isn't as Hitler like (hope I'm allowed to say that!) as Gas Safe and the electrical world. Anyone is allowed to service and maintain an oil boiler or contraption (e.g. oil stove).
BUT
If there are building regulations to adhere to then you need a qualified OFTEC in this case or a building inspector from the local council.
For example, there are building rules on the ventilation. You can get this passed by the building inspector (for a princely sum) or if it's installed correctly most OFTEC chappies would be happy to sign the work off for much less than the building inspector.
There's another BUT too ...
I suspect that if an OFTEC technician does not sign off the installation then the warranty would be invalid.
BUT
If there are building regulations to adhere to then you need a qualified OFTEC in this case or a building inspector from the local council.
For example, there are building rules on the ventilation. You can get this passed by the building inspector (for a princely sum) or if it's installed correctly most OFTEC chappies would be happy to sign the work off for much less than the building inspector.
There's another BUT too ...
I suspect that if an OFTEC technician does not sign off the installation then the warranty would be invalid.